icalendar.rb is a Ruby library for parsing and generating iCalendar files.
ICalendar Validator checks the encoding and structure of your ICalendar resources against the ICalendar specifications.
Simian is an enterprise-class Mac OS X software deployment solution with Google App Engine-based hosting and a future proof client based on the Munki open source project.
A feature-rich and easy-to-use content managment system for small Web sites.
A communication and collaboration suite.